🔺 Up red triangle UTF-8 character with hex code 1F53A

Using HEX code of Up red triangle in HTML file

<span> &#x1F53A; </span>

Using Decimal code of Up red triangle in HTML file

<span> &#128314; </span>

Using HEX code of Up red triangle in CSS file for content

span { 
    content: '\1f53a';
}